package com.ym.common.utils;

import cn.hutool.core.exceptions.ExceptionUtil;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;

import java.net.URLEncoder;

/**
 * 坐标转换工具
 *
 * @author: 李涛
 * @version: 2019年12月12日 9:07
 */
@Slf4j
public class GpsUtil {

	public static final String BAIDU_LBS_TYPE = "bd09ll";
	public static double pi = 3.1415926535897932384626;
	public static double a = 6378245.0;
	public static double ee = 0.00669342162296594323;

	/**
	 * 84 to 火星坐标系 (GCJ-02) World Geodetic System ==> Mars Geodetic System
	 *
	 * @param lat
	 * @param lon
	 */
	public static GPS gps84ToGcj02(double lat, double lon) {
		if (outOfChina(lat, lon)) {
			return new GPS(0, 0);
		}
		double dLat = transformLat(lon - 105.0, lat - 35.0);
		double dLon = transformLon(lon - 105.0, lat - 35.0);
		double radLat = lat / 180.0 * pi;
		double magic = Math.sin(radLat);
		magic = 1 - ee * magic * magic;
		double sqrtMagic = Math.sqrt(magic);
		dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
		dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
		double mgLat = lat + dLat;
		double mgLon = lon + dLon;
		return new GPS(mgLat, mgLon);
	}

	/**
	 * 腾讯高德-》谷歌地球
	 * <p>
	 * * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return
	 */
	public static GPS gcjToGps84(double lat, double lon) {
		GPS gps = transform(lat, lon);
		double lontitude = lon * 2 - gps.getLon();
		double latitude = lat * 2 - gps.getLat();
		return new GPS(latitude, lontitude);
	}

	/**
	 * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标
	 *
	 * @param gg_lat
	 * @param gg_lon
	 */
	public static GPS gcj02ToBd09(double gg_lat, double gg_lon) {
		double x = gg_lon, y = gg_lat;
		double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi);
		double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi);
		double bd_lon = z * Math.cos(theta) + 0.0065;
		double bd_lat = z * Math.sin(theta) + 0.006;
		return new GPS(bd_lat, bd_lon);
	}

	/**
	 * * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * * @param
	 * bd_lat * @param bd_lon * @return
	 */
	public static GPS bd09ToGcj02(double bd_lat, double bd_lon) {
		double x = bd_lon - 0.0065, y = bd_lat - 0.006;
		double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi);
		double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi);
		double gg_lon = z * Math.cos(theta);
		double gg_lat = z * Math.sin(theta);
		return new GPS(gg_lat, gg_lon);
	}

	/**
	 * (BD-09)-->84
	 *
	 * @param bd_lat
	 * @param bd_lon
	 * @return
	 */
	public static GPS bd09ToGps84(double bd_lat, double bd_lon) {

		GPS gcj02 = bd09ToGcj02(bd_lat, bd_lon);
		GPS map84 = gcjToGps84(gcj02.getLat(),
				gcj02.getLon());
		return map84;

	}

	/**
	 * is or not outOfChina
	 *
	 * @param lat
	 * @param lon
	 * @return
	 */
	private static boolean outOfChina(double lat, double lon) {
		if (lon < 72.004 || lon > 137.8347) {
			return true;
		}
		if (lat < 0.8293 || lat > 55.8271) {
			return true;
		}
		return false;
	}

	private static GPS transform(double lat, double lon) {
		if (outOfChina(lat, lon)) {
			return new GPS(lat, lon);
		}
		double dLat = transformLat(lon - 105.0, lat - 35.0);
		double dLon = transformLon(lon - 105.0, lat - 35.0);
		double radLat = lat / 180.0 * pi;
		double magic = Math.sin(radLat);
		magic = 1 - ee * magic * magic;
		double sqrtMagic = Math.sqrt(magic);
		dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
		dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
		double mgLat = lat + dLat;
		double mgLon = lon + dLon;
		return new GPS(mgLat, mgLon);
	}

	private static double transformLat(double x, double y) {
		double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
				+ 0.2 * Math.sqrt(Math.abs(x));
		ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
		ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
		ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
		return ret;
	}


	private static double transformLon(double x, double y) {
		double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
				* Math.sqrt(Math.abs(x));
		ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
		ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
		ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0
				* pi)) * 2.0 / 3.0;
		return ret;
	}

	/**
	 * 根据地址查询经纬度，
	 * 结果百度高德坐标系
	 * 不要多线程，
	 */
	public static GPS searchGpsByAddress(String address) {
		try {
			ThreadUtil.sleep(500);
			String findUrl = "https://apis.map.qq.com/jsapi?qt=poi&wd=%s&pn=0&rn=10&rich_source=qipao&rich=web&nj=0&c=1&key=FBOBZ-VODWU-C7SVF-B2BDI-UK3JE-YBFUS&output=jsonp&pf=jsapi&ref=jsapi&cb=qq.maps._svcb3.search_service_0";
			String result = HttpUtil.get(String.format(findUrl, URLEncoder.encode(address,"utf-8"))).execute();
			int first = result.indexOf("(");
			int last = result.lastIndexOf(")");
			result = result.substring(first + 1, last);
			JSONObject jsonObject = JSONObject.parseObject(result);
			JSONObject detail = jsonObject.getJSONObject("detail");
			JSONArray pois = detail.getJSONArray("pois");
			System.out.println(pois.getJSONObject(0));
			double lng = pois.getJSONObject(0).getDoubleValue("pointx");
			double lat = pois.getJSONObject(0).getDoubleValue("pointy");
			return new GPS(lat, lng);
		} catch (Exception e) {
			log.error(ExceptionUtil.getRootCauseMessage(e));
		}
		return null;
	}

	/**
	 * 坐标
	 *
	 * @author: 李涛
	 * @version: 2019年12月12日 9:15
	 */
	public static class GPS {
		private double lat;
		private double lon;

		public GPS(double lat, double lon) {
			this.lat = lat;
			this.lon = lon;
		}

		public double getLat() {
			return lat;
		}

		public void setLat(double lat) {
			this.lat = lat;
		}

		public double getLon() {
			return lon;
		}

		public void setLon(double lon) {
			this.lon = lon;
		}

		@Override
		public String toString() {
			return "lat:" + lat + "," + "lon:" + lon;
		}
	}

}
